May-June 2017Volume 105, Number 3
Biologists and philosophers of science have long wondered whether evolution’s winding paths that led to today’s living world are predictable and repeatable, or unpredictable because of chance events. In this illustration, two evolutionary paths start out in parallel, and then begin to wend and bifurcate in sometimes similar and other times unique ways. Although evolutionary biologists cannot go back in time to rerun evolution from the beginning....
Justin Cheng, Cristian Danescu-Niculescu-Mizil, Jure Leskovec, Michael Bernstein
Analysis and simulation of online discussion sections show circumstances that can cause civil commentators to engage in aggressive behavior.
Zachary D. Blount
Is the living world more a result of happenstance or repeatable processes?
A radial layout continues to dominate visual expressions of information and data.
The existence of dark matter and dark energy has gained acceptance through a variety of complementary cosmological research methods.
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In Deepwater Horizon, engineers Earl Boebert and James M. Blossom reexamine one of the most horrifying technological disasters of recent memory: the blowout of an oil well in the Gulf of Mexico that destroyed a drilling rig, killed 11 crew members, and led to the largest marine oil spill in U.S. history.
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FROM THE EDITORS
Understanding the Butterfly Effect
Jamie L. Vernon
Smart and Squishy Robots
Building robots that are entirely soft requires the development of new components from valves to circuits, as well as ways to control deformable arms.
Slide Rules: Gone But Not Forgotten*
Many of these well-made mechanical calculating aids have outlasted the engineers who knew how to use them, but they remain culturally pervasive.
The Chemistry of Ironing
LETTER TO THE EDITORS
Bottle and Can Openers
Optics of Faked Photos
Restructuring Science in Russia
The Russian government is counting on young scientists to stimulate the economy through applied research.
First Person: Yuri Kovalev
Q&A with the project scientist of the RadioAstron space interferometer.
Curbing Immune Cells’ Appetite
Infected cells produce an “eat me” signal so that they’re destroyed by the immune system. But what if you want an infection to last?
SIGMA XI TODAY (PDF)
Moogfest Amps Up Connections between Science and Music
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